The quartet join Mark Ruffalo in the "Glee" co-creator's adaptation of "The Normal Heart."

Ryan Murphy is putting together an all-star cast for his latest film project, the big-screen adaptation of the Tony Award-winning drama The Normal Heart, being produced by Brad Pitt’s Plan B shingle.

Julia Roberts and Alec Baldwin, plusWhite Collar star Matt Bomer and Big Bang Theory'sJim Parsons, are joining Mark Ruffalo in the autobiographical drama, written by Larry Kramer, that details the rise of HIV/AIDS in New York’s gay community in the 1980s. Murphy, who hit mainstream success with Glee, is directing from a script by Kramer.

The play won the Tony for best revival last year, as well as best supporting actor and best supporting actress (for John Benjamin Hickey and Ellen Barkin, respectively). It also garnered nominations for best actor and best directing. It was originally staged Off-Broadway in 1985 and has seen several revivals in London and Los Angeles.

Murphy optioned the rights to the play last August and had Ruffallo attached as Ned Weeks, who is one of the first to raise an alarm when what was then known as “gay cancer" surfaces in New York.

Roberts will play Emma Brookner, a wheel-chair bound doctor who is one of the only doctors in New York talking the new disease seriously. That role is the one that won Barkin her Tony.

Murphy's last film was Eat, Pray, Love, which starred Roberts. With Glee and his FX series American Horror Story, he is one of the few writer/directors who regularly tackle gay themes to both critical and popular success.

CAA is putting together the financing and insiders say Participant Pictures is circling.

The next feature for Bomer (CAA, Anonymous Content) will be the Steven Soberbergh movie on male exotic dancers Magic Mike, while Parsons (UTA, Principal Entertainment, Hansen Jacobson) had a scene-stealing cameo in The Muppets.